[PATCH] hostap: Make hostap_tx_encrypt() static

hostap_tx_encrypt() is used only inside hostap_80211_tx.c and there
are no plans to use it elsewhere in the future either, so let's make
it static. As a bonus, this should silence Coverity scanner from
complaining about bogus FORWARD_NULL case (CID: 274).
Signed-off-by: Jouni Malinen <jkmaline@cc.hut.fi>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/hostap/hostap_80211.h

@@ -92,8 +92,6 @@ void hostap_dump_rx_80211(const char *name, struct sk_buff *skb,
 void hostap_dump_tx_80211(const char *name, struct sk_buff *skb);
 int hostap_data_start_xmit(struct sk_buff *skb, struct net_device *dev);
 int hostap_mgmt_start_xmit(struct sk_buff *skb, struct net_device *dev);
-struct sk_buff * hostap_tx_encrypt(struct sk_buff *skb,
-				   struct ieee80211_crypt_data *crypt);
 int hostap_master_start_xmit(struct sk_buff *skb, struct net_device *dev);
 
 #endif /* HOSTAP_80211_H */

drivers/net/wireless/hostap/hostap_80211_tx.c

@@ -299,8 +299,8 @@ int hostap_mgmt_start_xmit(struct sk_buff *skb, struct net_device *dev)
 
 
 /* Called only from software IRQ */
-struct sk_buff * hostap_tx_encrypt(struct sk_buff *skb,
-				   struct ieee80211_crypt_data *crypt)
+static struct sk_buff * hostap_tx_encrypt(struct sk_buff *skb,
+					  struct ieee80211_crypt_data *crypt)
 {
 	struct hostap_interface *iface;
 	local_info_t *local;
@@ -317,7 +317,7 @@ struct sk_buff * hostap_tx_encrypt(struct sk_buff *skb,
 	}
 
 	if (local->tkip_countermeasures &&
-	    crypt && crypt->ops && strcmp(crypt->ops->name, "TKIP") == 0) {
+	    strcmp(crypt->ops->name, "TKIP") == 0) {
 		hdr = (struct ieee80211_hdr_4addr *) skb->data;
 		if (net_ratelimit()) {
 			printk(KERN_DEBUG "%s: TKIP countermeasures: dropped "
@@ -535,5 +535,4 @@ int hostap_master_start_xmit(struct sk_buff *skb, struct net_device *dev)
 
 
 EXPORT_SYMBOL(hostap_dump_tx_80211);
-EXPORT_SYMBOL(hostap_tx_encrypt);
 EXPORT_SYMBOL(hostap_master_start_xmit);